People who have never attempted a thru-hike often assume the trail gives a lot of time to think. For some hikers, that may be true, but not so much for me. I've found I don't have much time to work out life's issues.
My thoughts are much more limited and basic than that. I tend to walk in one of two mindsets. In one, I'm concentrating on the trail. I want to make sure I'm going in the right direction and don't step on a rock that will twist an ankle. In my other thinking mode, which happens when the trail is easy, I put my brain in neutral and just walk.
In both of these mindsets, I'm also trying to stay aware of my surroundings. I want to notice and appreciate the environment around me. That, of course, is one of the reasons I'm here.